Re: Bayes' theorem problem

Got it, Thanks bobbyM and gAr

So after all this isn't related to Bayes'?

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.''God exists because Mathematics is consistent, and the devil exists because we cannot prove it''You have made another human being happy. There is no greater accomplishment.' -bobbym

Re: Bayes' theorem problem

Because I don't see where you use it

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.''God exists because Mathematics is consistent, and the devil exists because we cannot prove it''You have made another human being happy. There is no greater accomplishment.' -bobbym

Re: Bayes' theorem problem

I tried to match that too.

p(a|b) = (p(b|a)*p(a))/((p(b|a)*p(a))+(p(b|not a)*p(not a))

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.''God exists because Mathematics is consistent, and the devil exists because we cannot prove it''You have made another human being happy. There is no greater accomplishment.' -bobbym

Re: Bayes' theorem problem

Surely thats better.

But how do you use that formula?

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.''God exists because Mathematics is consistent, and the devil exists because we cannot prove it''You have made another human being happy. There is no greater accomplishment.' -bobbym

Re: Bayes' theorem problem

Now in that part, what does A and B stand for?

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.''God exists because Mathematics is consistent, and the devil exists because we cannot prove it''You have made another human being happy. There is no greater accomplishment.' -bobbym

Re: Bayes' theorem problem

Okay, I am contended with the tree anyway. Next time I will think of one

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.''God exists because Mathematics is consistent, and the devil exists because we cannot prove it''You have made another human being happy. There is no greater accomplishment.' -bobbym

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.''God exists because Mathematics is consistent, and the devil exists because we cannot prove it''You have made another human being happy. There is no greater accomplishment.' -bobbym

Re: Bayes' theorem problem

Okay! Thanks

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.''God exists because Mathematics is consistent, and the devil exists because we cannot prove it''You have made another human being happy. There is no greater accomplishment.' -bobbym

Re: Bayes' theorem problem

Webpages?

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.''God exists because Mathematics is consistent, and the devil exists because we cannot prove it''You have made another human being happy. There is no greater accomplishment.' -bobbym

Re: Bayes' theorem problem

May I have the link?

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.''God exists because Mathematics is consistent, and the devil exists because we cannot prove it''You have made another human being happy. There is no greater accomplishment.' -bobbym

Re: Bayes' theorem problem

A bag contains 5 balls. Two balls are drawn and are found to be white.

What is the probability that all the balls are white?

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.''God exists because Mathematics is consistent, and the devil exists because we cannot prove it''You have made another human being happy. There is no greater accomplishment.' -bobbym

Re: Bayes' theorem problem

That is what I suspected.

Let me show you the solution and please tell me if you can digest it.

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.''God exists because Mathematics is consistent, and the devil exists because we cannot prove it''You have made another human being happy. There is no greater accomplishment.' -bobbym

Re: Bayes' theorem problem

PIf P(A)=probability of getting the bag chosen for drawing balls when all the 5 balls in the bag are white.

P(B)=probability of getting the bag chosen for drawing balls when only 4 balls in the bag are white

P(C)=probability of getting the bag chosen for drawing balls when only 3 balls in the bag are white

P(D)=probability of getting the bag chosen for drawing balls when only 2 balls in the bag are white

P(E)=probability of getting two white balls drawn from the bag

P(E/A)=probability of two white balls drawn when the bag is chosen which has all white balls in it

P(E/B)=probability of two white balls drawn when the bag is chosen which has only 4 white balls in it

P(E/C)=probability of two white balls drawn when the bag is chosen which has only 3 white balls in it

P(E/D)=probability of two white balls drawn when the bag is chosen which has only 2 white balls in it.

So using baye's theorem

required probability

Last edited by Agnishom (2014-10-05 07:07:52)

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.''God exists because Mathematics is consistent, and the devil exists because we cannot prove it''You have made another human being happy. There is no greater accomplishment.' -bobbym